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CVE-2026-26792

33
FAUCET Score

CVE-2026-26792 details multiple critical command injection vulnerabilities found in the set_upgrade function of GL-iNet GL-AR300M16 v4.3.11 devices. Attackers can exploit various parameters, such as modem_url and firmware_upload, to execute arbitrary commands on the affected router. This vulnerability carries a CVSS score of 9.8 (Critical), signifying it is remotely exploitable without authentication or user interaction, leading to a complete compromise of confidentiality, integrity, and availability. While there has been some community discussion, there is currently no evidence of active exploitation, and no public exploit code is available in common repositories. The EPSS score also indicates a very low likelihood of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
4.3.11CPE matchmatch criteria
cpe:2.3:o:gl-inet:ar300m16_firmware:4.3.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.78%
Probability of exploitation in next 30 days
EPSS Percentile
84.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0278 is in the 76th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / sezangel/IOT-vul/tree/main/GL-iNet/GL-AR300M16/set_upgrade
ExploitThird Party Advisory